This keys to A. caenus vs. A. laetus.
I favor A. caenus due to:
+the dark femora (legs entirely pale in A. laetus)
+pronotum widest near base (widest "about middle" in A. laetus per Lindroth; Ciegler states "widest before middle")
+relative wideness of body (A. laetus is apparently much narrower)
The Anisodactylus laetus in the guide
here looks like mine, and I wonder if it is not A. caenus instead.
Update: Specimen donated to Peter Messer (PWMC), 2023.